So what happened today???
'One of tonight's rebels, former Shadow Chancellor Chris Leslie, said: "There’s a growing number of Labour colleagues who feel so strongly about the threat of Brexit austerity that they will - with regret - break the whip to defend the interests of their constituents. When it comes to the single market I hope our frontbench will get off the fence before long."
The single market amendment tonight - during the report stage of the bill - was tabled by SNP Westminster leader Ian Blackford and was backed by the Lib Dems and Greens.
SNP MP Peter Grant said: "Today was a huge test for Jeremy Corbyn and the Labour party – and they failed miserably. Instead of voting with the SNP to prevent a devastating hard Brexit, Labour instead chose to sit on the sidelines, allowing the Tories to edge ever closer to the cliff-edge – putting the jobs, incomes, and living standards of millions of people at risk."
Like the Tories, Mr Corbyn has insisted the UK must quit the single market and customs union after Brexit, although he has said Labour wants Britain to maintain tariff-free access to the European market.
The Labour leader faces a battle within his own party on the issue - with 87% of Labour members wanting to remain in the single market according to a recent YouGov poll.'